Question everything, eventually you will get to your truth.
So often we find something new (like Kyusho) and we tend to follow the source that originally opened that first door for our new perception.
But not to look research and evaluate other possibilities within that new knowledge will limit your potential in it. Trust only yourself to know what is best for yourself.
So it is with Kyusho, train as you are but also Research other avenues until you find what will be real and more importantly, usable in your life.
Once found, pursue it fully with all you are to truly reap all the benefits, then help others learn to be their own instructor.